Thermodynamics: Energy, Work and Heat (Animation)
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Thermodynamics: Energy, Work and Heat (Animation)
Chapter:
0:00 Intro
0:17 Energy
1:10 Work
2:05 Heat
2:37 Heat and Temperature
2:54 Heat transfer mechanisms
3:25 Sign conventions for work and heat
4:34 Forms of energy
4:55 Macroscopic and Microscopic forms of energy
6:51 Total energy of a system
Thermodynamics Energy:
Energy is the quantitative property
that must be transferred to a body or physical system
to perform work on the body or to heat it.
The S.I unit of energy is the “Joule”.
The term “energy” was coined in 1807 by Thomas young and its use in thermodynamics was proposed in 1852 by Lord Kelvin.
Thermodynamics deals with the transfer of energy from one place to another and from one form to another.
The energy can be transferred in two ways:
by doing work
-by heat transfer.
Work:
Work is the transfer of energy from one mechanical system to another.
The S.I unit is the joule
.
Heat:
The form of energy that is transferred between two systems
or a system and its surroundings, by virtue of a temperature difference.
Unit: joule (S.I) and Calorie (not S.I)
Heat is transferred by three mechanisms:
-Conduction
-Convection
-Radiation
The total energy of a system can be divided in two groups:
Macroscopic
forms of energy
Microscopic forms of energy
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